Shuttle changing loom



Dec. 1, 1931. A. J. CHEVRETTE SHUTTLE CHANGING LOOM Original Filed April 23, 1929 lin a/rfor @0529)? J. 6%fV/6fi9 Dec. 1, 1931. I A. J. CHEVRETTE 1,834,302

SHUTTLE CHANGING LOOM Original Filed April 23, 1929 4 Sheets-Sheet 2 fire/tor Dec. 1, 1931. J CHEVRETTE 1,834,302-- SHUTTLE CHANGING LOOM Original Filed April 25. 1-929 4 Sheets-Sheet 5 [We/rim Dec. 1, 1931. A. J. CHEVRETTE 17,834,302

SHUTTLE CHANGING LOOM I Original Filed April 25. 1929 4 Sheets-Sheet 4 I .5714? 2 0/ @1495 J CZW/"affe Patented Dec. 1; 1931 Unite-"e AUGUSTIN J. GHEVRETTR' or wokcns'rnn,

MESS-ACHUSETTS,ASSiGNORsTOFCROMPTON & KNOVJLES LOOM worms, on-WoncEsTER;messAcnnsn'rms;A connonmion or:-

v MASSACHUSETTS snu'rrnn omnGINenoom I Applicati'on fildhpr'i1f23i1929, Sam 110,357,548; Renewedme;1931a":-

This invention relates to loom which mechanism is provided for automatically re -i placing an exhausted shuttleduring the-con effectively completed and that the transfer operation may be performed. at a higher;

speed. a g L A morespecific object of my lnventlon-is to provide means by whichthe fresh shuttle is positively seated in the-regular shuttle.

box immediately: afterjt'ransfer thereto.

In the preferredlform of my -invent1on,lI provide: a hinged cover for the regular shuttively. raisingand lowering said cover, as the box ispresented to theshuttle storage magazine and is thereafter removed therefrom.

My invention further relates to arrangements and combinations of parts which will.

be hereinafter described and more particularly pointed out in theappended claims.

A preferred form of the invention is shown I these parts being separated; bya relatively.

in the drawings in which Fig. lisa front elevation of parts of a loom embodying my improvements;

Fig. 2. is a left hand side elevation, looking in :the direction of the arrow 2 in Figl; l I

Fi s. 3..and,4:aare partial plan views,taken 65: along'the line .3'3 and-' l- Fig 2respectively;' 3

, Figs. 5 6, .7 and 8 are diagrammaticsectionalelevations of? the storage magazine. and shuttle boxes, showing, the same-1n .cer- -ta1n successive relatlons assumed thereby duringshuttletransfer; and

Fig. 9 is a detail sectional? elevation of; the boxes, taken along the line 9 -9 inFig. 4..

Referring.to the drawings,I have shown a portion of .a loom .frameIIO', a lay. l1, .and

adrop box frame 12..(Fig. 2)il mounted on the usual lifter rod 13 and raisedandlow;

eredbyacam i l on the .usual bottomor'c'am shaft 15 of theloomr I Thelcamrl l engages rearend of". actuating lever 16, mounted on afixed pivot at L7 and movable,- alongs-ide aliftingleven 18, conn'ected byfa/link'1-9 to a stud atthelower end of the lifter rod13. A latch 20 is=mountedion the forward end ofv the actuating lever .16 and maybe projected by suit ablev pattern mechanism to a position in: which, it will engage the lifter ."lever 18 and form operative connection :between the lever16 and the lever 18. A. spring. 21iholds the rear. end of thelever 16 yieldinglyin conon a-flxedipart ofthe lay endandremain at. Y

a fixed elevationlelativelto the shuttlerace,v

so that rthebinder28 is: in position to .coeoprl erate with. a: shuttle. in running position; whether itx is: in. the. regular or. auxiliary shuttlebox. 7 I

At its extreme ihnerend, theregular .shu t-. tle box 25 is 'substantially closed.at.:itsxtop, ascindieated at and; 3.1 in lFigslrand "9;

rod;3.6. Thespring ldtmay beadjustedfltol.

provide any desired spring tension-to. close the cover downward on the shuttle box 25; A shuttle.storage-:magazine kiXFig. 2) is mounted in fixed position on a bracket ,45 secured .to the loomiside 10. The magazine. is of such vertical extent as to receive .and'

held five-or six fresh shuttles inreserve.

its front portion, the magazineis \cutI away, as indicated at 46 and 47 in Fig. 3, thus making the shuttles in the magazine more readily accessible and also allowing the weft ends W to be drawn freely outward to a suitable end holder 48 (Fig. 4).

The magazine 44 has a bottom plate 50 (Fig. 2) mounted on a pair of swinging arms 52, one at each end of the magazine and each pivoted to a stud 54 fixed near the top of the magazine. A spring 56 is inserted between a lug or projection 57 on one of the arms 52 and a .lug 58. on the magazine 44. The spring 56 acts to swing the plate 50 to operative or magazine-closing position, which po-,

sition is determined by a set screw 59 on one of the arms 52, which may be adjusted to engage the rear face of the magazine 44.

The normal position of thebottom plate 50 is indicated in Figs. 2, 5 and 7, and the rearward or inoperative position thereof is indicated at Fig. 6. Bolts 60 and 61 are adjustablysecured in the arms 52 which support the plate 50 and are engaged by portions of the shifting shuttle boxes as the latterare moved rearward in raised position at p the time of transfer.

A cam member 65 (Fig. 2) is secured in fixed position on the front of the magazine 44 and is so located that it will co-operate with a cam roll 67 mounted on a lug 68 projecting upward from the plate or cover 35.

Having described the details of construction of my improved loom, the method of operation thereof is as follows During the normal running of the loom, the shuttle boxes are in lowered position and the regular shuttle box 25- is in alignment with the shuttle race on the lay 11. Upon indication of weft exhaustion, the shuttle boxes are raised while the shuttle is atthe opposite end of the loom. Upon its return, the shuttle S is received in the lower or auxiliary shuttle box 26.

The boxes are elosed at their back sides by a plate 70 (Fig. 4) mounted in fixed position on the lay 11 and the shuttle S is received between this plate 70 and the binder 28 which is alsofixed in vertical position.

The lower or auxiliary box 26 has nobottorn, however, and as the boxes next move downward, the shuttle S is released from the binder 28 and falls into aohute or guideway 75, inclined forward and downward and guiding the exhaustedshuttle to a suitable receptacle or support. 4

In the meantime, the regular shuttle box 25 has been raised, carrying the cam roll 67 on the box cover 35 into position for engagement by the-fixed cam plate 65. Such engagement swings the cover 35' forward and up- Ward, as indicated in Fig. 6, while at the same time the raised shuttle box 25 in its rearward movement engages the bolts or stops 60 and 61 on the arms 52 and thus opens the lower end of the magazine, as also indicated in Fig. 6. v

.to closethe box. during the initial forward movement of the lay.

The shuttle S is thus .very effectively and firmly seated'in the regular shuttle box 25 and is thereafter held therein by the cover plate 35, which is yieldinglyheld closed by the spring 40 after release from the cam plate 65. During this cover-closing operation, the parts assume the successive positions shown in Figs. 7 and 8 and continued downward movement brings the regular box back to the position shown in Fig. 5.

l/Vhen the boxes reach this position, the auxiliary box is below the binder 28 and the exhausted shuttle S is free to drop into the chute or guide 75. Also as the lay moves forward, the bottom plate 50 returns to its original position, preventing downward move ment of the next shuttlesin the magazine, which has now become the lowermost shuttle.

I have thus provided extremely simple mechanism by which a fresh shuttle can be released from storage and inserted in place of the running shuttle upon indication of weft exhaustion, and by which it can be firmly and positively seated in the regular shuttle box before the boxes return to running.

position and before the new shuttle is picked therefrom.

Both the opening and closing of the cover plate 35 is accomplished by positive cam action and on this account it is found that a loom provided with my improved replenishing mechanism can be operated at a very substantial increase in speed over that which would be permitted with the construction shown in my previous application.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. In a shuttle changing loom, a regular shuttle box, an auxiliary shuttle box positioned beneath said regular shuttle box, a cover hinged on said regular shuttle box, a shuttle magazine, means to present said regular shuttle box to said magazine by an upward and rearward movement, and cam means effective to positively raise and positively lower said cover as said regular shuttle box approaches andirecedes from said magazine.

2. In a shuttle changing loom, a regular shuttle box, an auxiliary shuttle box positioned beneath said regular shuttle box,

means to insert a fresh shuttle in said regular box, and cam means effective topositively push said shuttle firmly downward to its seat in said shuttle box.

v 3. In a shuttle changing loom, a regular shnttle box, an auxiliary shuttle box positioned beneath said regular shuttle box, a cover for said box, and positively aoting means effective to force said cover downward on said box and to seat a shuttle freshly inserted therein.

4. In ashuttle changing loom, aregular shuttle box, an auxiliary shuttle box positioned beneath said regular shuttle" box, a

1 cover normally closing the top of said regular box, a storage magazine for fresh shuttles, means to move said regular box upward and rearward to a position under said magazine in which it receives a shut- ;gq tle from said magazine,'and positively acting means effective to swing said cover upward and forward from said box as said box is moved upward and rearward and to positively close said cover downward on said 24 regular shuttle box as said box is moved forward and downward from said magazine.

In testimony whereof I have hereunto affixed my signature. 1

AUGUSTIN J. CHEVRETTE. 

